Process of making fire and water proof fabrics



' taint R PLASTIC. Cross Ref r t /vlr UNITED STATES PATENT OFFICE.

HENRY A. OLAASEN, OF BROOKLYN, NEW YORK.

,QPROCESS, OF MAKING FIRE AND WATER PROOF FABRICS.

' SPECIFICATION forming part of Letters ?atent No. 496,699, dated May 2, 1893. 7 Application filed February 28, 1893. Serial No. 463,453. (No specimens.)

pounds of yellow wax, which are boiled until an easy fiowmg m re is obtained. The fire-proof solution is next applied, which is composed of one gallon of li uid lass, three pounds of and one pound is no calcium chloride, .5 5 1 of sodium-ch oride. y treating the founda- 4o To all whom it may concern:

Be it known that I, HENRY A. CLAASEN, a citizen of the United States, residingin Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Processes of Making Fire and Water Proof Fabrics, of which the follow v ing is a specification.

This invention relates to an improved pro- 'cess of making water and fire proof fabrics, which I intend to be used for roof-coverings and similar purposes, and the invention consists in the following process: first, applying a suitable size, secondly, treating the fabric with a solution of boiled linseed-oil, iufusorial earth and whiting, so as to cover the surface of the fabric; then coating the surface with a solution of linseed-oil, caoutchouc and paraffine, then applying a coat of a solution composed of liquid glass, calcium-chloride, and sodium-chloride.

In carrying my improved process into practies, the fabric which forms the foundation of myim proved roof-covering is preferably made of stout burlap, which is first sized with a solution of dextrine in water, and then coated at both sides with a mixture composed of twelve gallons of boiled linseed oil, forty pounds of infusorial earth, an or y pounds of wlmtingm mix ure fills up the meshes of e fa me. On this coating or ground is applied a water-proof coating composed of twelve gallons of raw linseed-oil eight pounds of caoutchouc, two pound sof paratfine and two' tion a ric in e manner described, a very durable water and fire-proofroof-covering is obtained at a reasonable expense, and one which is far superior: to the ordinary roofcoverings which are now used.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- The process herein described of preparing water and fire-proof fabrics, which consists of the following steps:--first, sizing the fabric by a .dextrine. solution, secondly, coating the fabric with a mixture of .boiled linseed-oil, infusorial earth and whiting, thirdly, applying a coating of a solution of raw linseed-oil, caoutchouc and a suitable wax or paratfine, and fonrthly, coating the surface again with a solution of liquid glass, calcium-chloride, and sodium-chloride, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my nameliu presence of two subscribing witnesses.

HENRY A. OLAASEN. 

